/* Listing3602.java */

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class Listing3602
extends JFrame
{
  public Listing3602()
  {
    super("Ein einfacher JFrame");
    //WindowListener hinzufügen
    addWindowListener(new WindowClosingAdapter(true));
    //Layout setzen und Buttons hinzufügen
    Container contentPane = getContentPane();
    contentPane.setLayout(new GridLayout(3, 1));
    contentPane.add(new JButton("Button 1"));
    contentPane.add(new JButton("Button 2"));
    contentPane.add(new JButton("Button 3"));
  }

  public static void main(String[] args)
  {
    Listing3602 wnd = new Listing3602();
    wnd.setLocation(100, 100);
    wnd.setSize(300, 200);
    wnd.setVisible(true);
  }
}